Buckle



FIG. 1 is a perspective view of a buckle showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a rear view thereof.

The broken line showing of a strap, in FIGS. 1-7, is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a buckle, as shown and described. 